Explore the wonderful world of advanced Swift.

Point-Free is a video series exploring advanced topics in the Swift programming language, hosted by industry experts, Brandon and Stephen.

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What to expect

New content regularly

We dissect some of the most important and interesting topics in Swift programming frequently, and deliver them straight to your inbox.

Wide variety of topics

We cover both abstract ideas and practical concepts you can start using in your code base immediately.

Playground downloads

Download a fully-functioning Swift playground from the episode so you can experiment with the concepts discussed.

Video transcripts

We transcribe each video by hand so you can search and reference easily. Click on a timestamp to jump directly to that point in the video.

Free episodes

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Episode 291 • Aug 19, 2024

We are going to take a Swift feature into the browser. We will set up a WebAssembly application from scratch, show how to run and debug it, and even set up some basic UI. And then we will integrate our existing model into it, all powered by the magic of Swift’s Observation framework.

Free 32 min
Episode 290 • Aug 12, 2024

It’s time to go cross-platform! We will take a feature written in Swift and use it in vastly different situations, including not only SwiftUI and UIKit, but beyond Apple’s frameworks and ecosystems. We will start with a baby step and introduce our feature to a third party view paradigm, Airbnb’s Epoxy.

Free 33 min
Episode 282 • Jun 3, 2024

We finish building a modern UIKit application with brand new state-driven tools, including a complex collection view that can navigate to two child features. And we will see that, thanks to our back-port of Swift’s observation tools, we will be able to deploy our app all the way back to iOS 13.

Free 31 min

All episodes

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Episode 297 • Oct 7, 2024

In this series we go back to basics with a deep dive into the subject of Equatable types. Equatability is a deceptively simple topic. It is a surprisingly tricky protocol that has some very specific semantics that must be upheld baked into it, and there are many misconceptions on how one can or should conform types to this protocol.

Subscriber-only 29 min
Episode 296 • Sep 23, 2024

We round out our series with one more feature: the ability for our users to manage a list of their favorite facts. It will allow us to explore a complex side effect, persistence, and show how the same Swift code can save and load data across iOS app launches and web page refreshes.

Subscriber-only 53 min
Episode 295 • Sep 16, 2024

We’ve already covered a lot of ground and could have ended the series last week, but let’s do a few more things to show just how powerful cross-platform domain modeling can be by adding a new feature to our cross-platform application and see just how easy it is to integrate with SwiftUI, UIKit, and WebAssembly.

Subscriber-only 27 min

Collections

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SwiftUI

Collection

SwiftUI is Apple’s declarative successor to UIKit and AppKit, and provides a wonderful set of tools for building applications quickly and effectively. It also provides a wonderful opportunity to explore problems around architecture and composition.

37 episodes 23 hr 50 min

Composable Architecture

Collection

Architecture is a tough problem and there’s no shortage of articles, videos and open source projects attempting to solve the problem once and for all. In this collection we systematically develop an architecture from first principles, with an eye on building something that is composable, modular, testable, and more.

92 episodes 58 hr 30 min

Concurrency

Collection

Swift has many tools for concurrency, including threads, operation queues, dispatch queues, Combine and now first class tools built directly into the language. We start from the beginning to understand what the past tools excelled at and where they faultered in order to see why the new tools are so incredible.

12 episodes 9 hr 3 min

A better way to create SwiftUI bindings

If you have ever created a binding using the get:set: initializer, you may want to reconsider. Doing so can hurt SwiftUI’s ability to animate your view. Luckily there is a better way. You can leverage @dynamicMemberLookup and subscripts to derive new bindings in a way that allows SwiftUI to propertly track where the binding came from.

Watch 7 min

Are mocks bad?

You may have heard that “mocks are bad” and that they cause you to test the mock rather than your application’s actual feature. That doesn’t have to be the case. It is totally fine to mock a dependency to a system that you do not control, such as the file system. You do not need to test that saving and loading with that dependency works (after all, that’s the mocked behavior!), but you should test how your application behaves when it tries to load or save data. For example, is data saved after each change to your app’s data? Or, if loading data throws an error, do you show an alert to the user?

Watch 2 min

How should you perform async work in a non-async context?

We often need to perform async work when there is no async context, such as in SwiftUI button action closures. In such cases it seems that you have no choice but to spin up an unstructured Task, but you may have heard that doing so it bad. So what are you to do? Well, there is an easy answer…

Watch 1 min

What people are saying

Mike Abidakun
@mabidakun

Every episode has been amazing on Pointfree, yet somehow, you've managed to make these Parser combinator episodes even better!!! ⭐️⭐️⭐️⭐️⭐️

Frank Courville
@Frankacy

My new favourite morning routine is feeding 👶🏻 while watching @pointfreeco

Felipe Espinoza
@fespinozacast

Watching the key path @pointfreeco episodes, and I am like 🤯🤯🤯. Super cool

Dad
@GeekAndDad

Three recent @pointfreeco episodes were so interesting I stayed in the treadmill 3x as long as usual and watched them all in a row! Walking may be challenging later/tomorrow... 😮

Luca Ceppelli
@lucaceppelli

I bought the annual subscription and after I watched all videos and played with the sample code and libraries I can say it was the best money I spent in the last 12 months.

Boris Bielik
@h3sperian

This is surely one of the best shows for Swift folks out there! The content and explanation is at a really high bar!

William Savary
@NSHumanBeing

Just became a subscriber! I'm binge watching episodes now! Great content! I'm learning so much from you guys. The repo for the site is the best go-to reference for a well done project and swift-web is something I am definitely going to use in my projects. Thanks for everything!

Alejandro Martinez
@alexito4

I really love the dynamics of @pointfreeco. The dance of “this is super nice because…” “yes, BUT….”. they clearly show what’s good, what’s not so good and keep continuously improving.

Mr. Hartwell
@sergeyfitis

Honestly, I'm an Android developer, I write applications in Kotlin. My colleague iOS developer told me about your course. And I liked it so I decided to buy a subscription.

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